stupidhead is in the dictionary...!!

from the uban dictionary:
http://www.urbandictionary.com/define.php?term=stupidhead

1. stupidhead
someone who has no fucking clue about anything.


2. Stupidhead
A person who is usually really stupid. Someone who makes mistakes and doesn't realize it. A person that is clumsy, stupid, or just plain weird. But you know, you can be a stupidhead and still be cool and fun. It just depends.

note that stupid head spelled as two words is more common. as one word, urban dictionary got there first...